The wireless sensor uses a transmission frequency of 433.92 MHz A host can connect up to 3 wireless sensors simultaneously (a host is only equipped with a single transmitter; to achieve this function, you must purchase additional sensors) Host temperature measurement range: 0°C (14°F) ~ 60°C (140°F) Host humidity measurement range: 10% RH ~ 99% RH Sensor temperature measurement range: -40°C (-40°F) ~ 60°C (140°F) Sensor humidity measurement range: 10% RH ~ 99% RH 【Multifunction Weather Station with Large LCD Screen】 The weather station features a large color LCD screen, displaying all important information clearly at a glance: indoor and outdoor temperature (Celsius and Fahrenheit)/humidity, max/min temperature and alarm, weather forecast, comfort, time (12/24 hours), calendar, week (seven languages to choose from), daily alarm and snooze function, and moon phase 【Temperature and Humidity Forecast Function】 Collect real-time data based on outdoor sensors, then track related variables based on the wireless indoor and outdoor sensor, including changes in temperature, humidity, and air pressure, to generate more accurate forecasts for your location 【Radio Weather Station with 2 Outdoor Sensors】 The weather station can display real-time weather from up to 2 wireless sensors simultaneously; the remote sensor’s wireless range can reach up to 60m; you can not only place them in a room or basement, but also outdoors. Meanwhile, the screen has an integrated sensor, which you can use to detect temperature data and indoor humidity levels 【Two Power Supply Modes】 The thermometer hygrometer is powered by an adapter (included) or AA batteries (not included). When using battery power, the screen turns off automatically after about 15 seconds to save power. When using the power adapter, the screen remains on. At the same time, when using batteries, the screen automatically enters memory mode and saves all settings you have configured 【Your Personal Weather Assistant】 Our indoor weather station differs from the weather forecasts you see on TV or online. Weather forecast products have separate sensors that can collect real-time data outdoors. They are based on weather stations that track specific weather variables, to generate accurate, personalized forecasts for your location Size: 172*132*23mm Packaging Quantity: 1 piece